﻿﻿//-----------------------------------------------------------------------
// <copyright file="RandomNodesHelper.cs" company="AFS">
// Copyright (c) AFS. All rights reserved.
//
//    This file is part of Chatbox.
//
//    Chatbox is free software: you can redistribute it and/or modify
//    it under the terms of the GNU Lesser General Public License as published by
//    the Free Software Foundation, either version 3 of the License, or
//    any later version.
//
//    Chatbox is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
//    GNU Lesser General Public License for more details.
//
//    You should have received a copy of the GNU Lesser General Public License
//    along with Chatbox. If not, see http://www.gnu.org/copyleft/lesser.html
// </copyright>
//----------------------------------------------------------------------- 

namespace ChatBox.DomainObjects.XmlFeedObjects
{
    using System.Linq;
    using System.Xml.Linq;

    using ResultData;

    /// <summary>
    /// Helper methods on random nodes
    /// </summary>
    public static class RandomNodesHelper
    {
        /// <summary>
        /// read random nodes from an xml document
        /// </summary>
        /// <param name="doc">the xml document</param>
        /// <returns>the contructed object list</returns>
        public static RandomNodesDataResult ToRandomNodes(this XContainer doc)
        {
            RandomNodesDataResult result = new RandomNodesDataResult(true, null, string.Empty);

            var randomNodesElement = doc.Elements("randomnodes");
            var witElement = randomNodesElement.Elements("wit").FirstOrDefault();

            if (witElement != null)
            {
                result.Wit = witElement.Value;
            }

            var randomNodesQuery =
                from randomNode in randomNodesElement.Elements("e2link")
                select randomNode.ToLink();

            result.RandomNodes = randomNodesQuery.ToList();

            return result;
        }
    }
}
